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" It is divided into 24 hours. The sidereal hours are counted from 0 to 24, commencing with the instant of the passage of the true vernal equinox over the upper meridian and ending with... "
The American Ephemeris and Nautical Almanac - Page 473
by United States Naval Observatory. Nautical Almanac Office - 1860
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1852 - 574 pages
...is uniform ; or, in other words, the diurnal rotation of the earth on its axis is strictly uniform. The sidereal hours are counted from 0 to 24, commencing with the instant of the passage of the vernal equinox over the superior meridian, and terminating with its return to the same point. The daily...
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Surveyor's and Engineer's Companion: a Comcise Treatise on Mathematical ...

William Schmolz - 1859 - 196 pages
...ascensions of the stars are counted. A Sideral Day is tho interval of time between the transit of the vernal equinox over any meridian, and its next succeeding...the same meridian. It is divided into 24 hours. The sideral hours are counted from 0 to 24, commencing with the instant of the passage of the true vernal...
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1866 - 566 pages
...of the stars are counted. _ A Sidereal Day is the interval of lime between the transit of the vernal equinox over any meridian, and its next succeeding...commencing with the instant of the passage of the true venial equinox over the upper meridian, and ending with its return to the same meridian. Solar Time....
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1872 - 548 pages
...regulated to sidereal time. A Sidereal Day is the interval of time between the transit of the vernal equinox over any meridian, and its next succeeding return to the same meridian. It is divided into 21 hours. The sidereal hours arc counted from 0 to ÍÍ4, commencing with the instant of the passage...
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1876 - 550 pages
...regulated to sidereal time. A Sidereal Day is the interval of time between the transit of the vernal equinox over any meridian, and its next succeeding...of the true vernal equinox over the upper meridian, und ending with its return to the same meridian. The vernal equinox is not a fixed, but a movable,...
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1876 - 552 pages
...regulated to sidereal time. A Sidereal Day is the interval of time between the transit of the vernal equinox over any meridian, and its next succeeding return to the same moriJian. It is divided into 24 hours. The sidereal hours are counted from 0 to 24, commencing with...
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The American Ephemeris and Nautical Almanac

1883 - 556 pages
...mean solar day; 365J solar days, or a year, being divided into 36&J sidereal days. lt^ ' divided ¡uto 24 hours. The sidereal hours are counted from 0 to 24, commencing with the I instant of the passage of the true vernal equinox over the upper meridian, and ending v, return to...
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1884 - 556 pages
...shorter than the mean solar day; 365J solar days, or a year, being divided into 366 sidereal days. It is divided into 24 hours. The sidereal hours are...the true vernal equinox over the upper meridian, and eliding with its return to the same meridian. About March 21st of each year the sidereal clock agrees...
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Miscellaneous Documents: 30th Congress, 1st Session - 49th ..., Volume 9

United States. Congress. House - 1885 - 558 pages
...clocks. EPH 00 — 31 — II A Sidereal Day is the interval of time between the transit of the vernal equinox over any meridian, and its next succeeding return to the same meridian. It is about 3m 56s shorter than the mean solar day ; 365J solar days, or a year, being divided into 366J...
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The American Ephemeris and Nautical Almanac

United States Naval Observatory. Nautical Almanac Office - 1888 - 556 pages
...shorter than the mean solar day; 365^ solar days, or a year, being divided into 366£ sidereal days. It is divided into 24 hours. The sidereal hours are counted from 0 to 24, commencing willi the instant of the passage of the true vernal equinox over the upper meridian, and ending with...
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